Am I right that the 2024 books have almost nothing about CRs? It almost reads like they meant to put more in either the DMG or MM and then didn't, or did I miss something?
Player's Handbook
Page 363: "Challenge Rating (CR) summarizes the threat a monster poses to a group of four player characters. Compare a monsters CR to the characters' level. If the CR is higher, the monster is likely a danger. If the CR is lower, the monster likely poses little threat. But circumstances and number of player characters can significantly alter how threatening a monster is in actual play. The Dungeon Master's Guide provides guidance to the DM on using CR while planning potential combat encounters. See also "Stat Block".
Page 375 - Stat Block: "Challenge Rating summarizes the threat a monster poses and is detailed in the Monster Manual."
Monster Manual
Page 8: Says CR is defined in the PHB and guidance on using CRs is in the DMG. It then gives a table that matches each CR to an exact XP amount and has a list of Proficiency Bonuses by CR.
Page 382-384: Table of monsters by CR
Dungeon Master's Guide
Doesn't appear in index.
Pages 56-57 - Creating a Creature: It notes changing ability scores affect various things and can change CR (doesn't say how) and that the various senses don't affect CR.
Pages 114-116 - Combat Encounters: The encounter building is all XP budget and doesn't mention CR except it notes to use CR 0 creatures sparingly and has a quick note that including a monster with CR higher than the party's level might one shot characters or have powers the party can't overcome.
Player's Handbook
Page 363: "Challenge Rating (CR) summarizes the threat a monster poses to a group of four player characters. Compare a monsters CR to the characters' level. If the CR is higher, the monster is likely a danger. If the CR is lower, the monster likely poses little threat. But circumstances and number of player characters can significantly alter how threatening a monster is in actual play. The Dungeon Master's Guide provides guidance to the DM on using CR while planning potential combat encounters. See also "Stat Block".
Page 375 - Stat Block: "Challenge Rating summarizes the threat a monster poses and is detailed in the Monster Manual."
Monster Manual
Page 8: Says CR is defined in the PHB and guidance on using CRs is in the DMG. It then gives a table that matches each CR to an exact XP amount and has a list of Proficiency Bonuses by CR.
Page 382-384: Table of monsters by CR
Dungeon Master's Guide
Doesn't appear in index.
Pages 56-57 - Creating a Creature: It notes changing ability scores affect various things and can change CR (doesn't say how) and that the various senses don't affect CR.
Pages 114-116 - Combat Encounters: The encounter building is all XP budget and doesn't mention CR except it notes to use CR 0 creatures sparingly and has a quick note that including a monster with CR higher than the party's level might one shot characters or have powers the party can't overcome.